CVE-2023-44487

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2023-44487

Confirmed

Yes

2023-10-10 00:00 UTC

Timestamps

2023-10-10

2023-10-10

Scope

KEV entry: HTTP/2 Rapid Reset Attack Vulnerability | Affected: IETF / HTTP/2 | Description: HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS). | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2023-10-31 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): This vulnerability affects a common open-source component, third-party library, or protocol used by different products. For more information, please see: HTTP/2 Rapid Reset Vulnerability, CVE-2023-44487 | CISA: https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487; https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/; https://nvd.nist.gov/vuln/detail/CVE-2023-44487

References
  • {'id': 'CVE-2023-44487', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-44487'}

6386c9c4-033b-4ac4-b69d-cdc0288bae9a

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 13:24 UTC

2026-02-06 07:53 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-400"
  ],
  "date_added": "2023-10-10",
  "due_date": "2023-10-31",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "HTTP/2",
  "vendorProject": "IETF",
  "vulnerabilityName": "HTTP/2 Rapid Reset Attack Vulnerability"
}
 -
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